A research institute specializing in Materials Science

Ceramic Materials Division

Department of Functional Ceramics

Head of Division 'Choei, Jong-Jin'
Head of Division
Choei, Jong-Jin

Department Introduction

Department of Functional Ceramics is conducting research in various fields using high-performance functional ceramic materials and device manufacturing technologies, including heat dissipation materials for electronics, echo-friendly piezoelectric ceramics, thermoelectric materials, piezoelectric single crystal, magnetocaloric refrigeration, acoustic sensors, ultrasound transducer, stacked actuators, machano-electric/magneto-electric energy harvester, battery, catalyst material for environmental purification and hydrogen production, etc. Through active exchanges with domestic and foreign universities and industries, we are playing a role as a hub in the field of functional ceramic materials and coatings.


Major Activities

  • Development of heat dissipation materials and devices : 3 papers published, 1 patent registered, 2 patents applied, 1 technology transfer.
  • Development of piezoelectric materials and energy harvesters : 5 papers published, 1 patent registered, 2 patents applied.
  • Development of catalysts and electrochemical ceramic materials : 2 papers published, 2 patents registered, 1 patent applied.

Major Research Area

  • Convergence heat dissipation materials for futuristic thermal management applied to electric vehicles and high-output electronic components
  • Piezoelectric materials, energy harvester, magneto-electric devices
  • Technology of highly textured piezoelectric ceramic materials
  • Technology of catalyst fabrication and application for environmental purification and hydrogen production

Future Research Plan

  • Development of high heat dissipation oxide ceramic filler and thermal interface material
  • Research on improvement of energy harvesting device characteristics based on piezoelectric single crystal-based composites and magnetostrictive materials
  • Nano powder grinding and dispersion ceramic bead manufacturing technology
  • Catalyst manufacturing and modularization for harmful gas and greenhouse gas treatment
  • Research on the high performance of energy materials through international cooperation and academic-research cooperation

Major R&D Activities

Development of the piezoelectric single crystal-based energy harvesting technology for powering the IoT sensor


  • The goal of this project is to develop a piezoelectric single crystal-based vibrational/magneto-electric energy harvester and improve its output power and reliability for use in IoT sensor networks.

[Research Activities and Outcomes]

  • Development of high-power energy harvesters based on piezoelectric single crystal and methodology to estimate the lifetime of the energy harvesters
  • Output power of the energy harvester > 10 mW
  • The estimated lifetime of the energy harvester > 109 cycles
  • Publication of 4 SCI papers
(Left) Lifetime evaluation of the piezoelectric energy harvester (Right) Practical application of the piezoelectric energy harvester

Development of 30㎛ ceramic beads and reliability evaluation technology


  • Development of high hardness and toughness spherical ceramic beads (~30㎛) for preparation of high purity, fine ceramic powders applied to advanced electronics and energy industries including MLCC and battery technologies.

[Research Activities and Outcomes]

  • Manufacturing technology of ~100nm zirconia nanoparticles and their high-dispersed slurry for forming tailor-made zirconia granules
  • Development of assembly control technology of nano-scale zirconia supraparticles
  • Preparation of zirconia seeds with an average size of ~20㎛ and sphericity of ~95% through simple spray drying process
  • Fabrication of zirconia microspheres with high hardness (>26 GPa), density (> 5.95 g/cm3), and elastic modulus (>210 GPa) (The hardness is highest compared with those of the 3YSZ samples reported to date)
  • Publication of 1 SCI paper and 4 oral presentations in domestic conferences
(Left) SEM images of ZrO2 seeds (Right) Density and mechanical properties of seeds

Development of high-performance monolith catalysts and modules to remove ozone generated from plasma


  • Development of high-performance catalytic materials and compact modules to efficiently remove harmful reactive species (ozone, O3) generated from plasma for pathogenic organisms removal based on low temperature active heterogeneous catalysts

[Research Activities and Outcomes]

  • Development of high-performance catalytic materials to remove harmful reactive species such as ozone
  • Development of monolith catalysts and module fabrication technology based on highly active catalysts
  • Calculation of major parameters for high-performance catalysts based on first principles
  • 1 technology transferred to a company, 9 patents applied and 2 SCI papers published
Plasma+ozone removal catalyst concept(left), performance of catalytic materials for ozone removal(center), and monolith catalyst module concept(right)